Machine for stripping nests from radiator cores



Jan. 25, 1927.

a. H. HAWKINS El AL' MACHINE FOR STRIPPING NESTS FROM RADIATOR CORES 5 Sheets-Sheet 1 Filed' Feb. 16 1925 Jan. 25,1927. 1,615,272

I B. H. HAWKINS ET AL mourns FOR STRI/PPING NESTS FROM RADIATOR corms Filed Feb. 16, 3 Sheets-Sheet 2 mman; 2

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Jan. 25 1927.

B. H. HAWKINS ET AL MACHINE FOR STRIPPING IiESTS FROM RADIATOR CORES Filed e 1925 3 Sheets-Sheet :3

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Patented Jan. 25, 1927.

UNITED I STATES 1,515,272 PATENT OFFICE.

BERT H. HAWKINS, F ROYAL OAK, AND EDW'ARD R. HANSEN, 013 DETROIT, MICHI- GAN, ASSIGNORS' T0 MCCORD RADIATOR & MFG. 00., OF DETROIT, MICHIGAN, A

CORPORATION OF MAINE.

MACHINE FOR STRIPPING NES'IS FROM RADIATOR COR-ES.

Application filed February In the manufacture of tubular radiator cores, such as are used on automobiles and other motor vehicles, the fin, strips or plates are assembled in a nest with the tube receiving holes in the plates in register or aligned so that the tubes may be forced through the holes in the plates in assembling the core, after which the core must be stripped from the nest.

Heretofore it has been the practice to manually pull the core from the nest. This requires considerable manual effort with the likelihood of bending or straining the core and throwing its parts out of line to hinder subsequent operations on the core.

The main object of our invention is to strip the nest from the core by power, without putting any undue strain or force on the core, and thus having the core onv leaving the nest in proper shape for the soldering and subsequent operations.

Other and further objects of our invention will appear from the following specification, taken in connection with the accompanying drawings, in which Fig. 1 is a top plan view of our improved machine Fig. 2 is a front view of the same;

Fig. 3 is an enlarged vertical sectional view on the line 3-3 of Fig. 1, with parts of the core in the nest;

Fig. 4.- is a sectional view through the core removed from the nest;

Fig. is an enlarged fragmentary vertical sectional View on line 5 of Fig. 1, with parts in elevation;

Fig. 6 is a top plan view of a detail of construction to be hereinafter described; and

Fig. 7 is a front view on a small scale of one of the head sheet holders.

The machine of our invention has a flat top plate 1 and supporting legs 2, 2. In the top. 1' is a square hole 3 made large enough for the nest to pass through. On top of the top plate 1 and exteridingv across the hole 3 are a plurality of upright narrow steel strips 4 of the same height and spaced apart by spacers 5, 5 between them at their ends, as shown in Fig. 6. Bolts 6 pass through the strips and spacers to hold them together, and the slotted frame thus made is clamped to. the topplate 1 by angles 7' and bolts 8, as shown in Figs. 1 and 5.

The nest comprises a plurality of sheet 16, 1925 Serial No. 9,413.

steel plates 9, 9 arranged upright on a base plate 10 below the top plate 1, as shown in Figs. 8- and 5. The plates 9 slide in the slots or spaces between thc'strips l, l and, when extending to the full extent above these strips, provide spaces to receive the relatively thin and flat sheet metal plates or fin 9 9 the proper distance apart for the fin strips 11 to be easily dropped into the spaces betweenthem yet hold the strips upright for insertion of the tubes 12 through them. The

angles 7 project above the strips l at the sides of the nest to hold the fins 11 from endw-ise displacement after insertion in the nest.

After the nest has been filled with fin strips 11, the head sheets 14, 15 of the core are applied to the nest by means of holders 16, 17. As shown in Fig. 3, the head sheets have marginal flanges tofit over partsofthe holders shaped to extend into the head sheets. The holder 16 carries: the top head sheet 14 and is placed infront of the nest behind upright pins 18, 18 carried bythe nest plate 10 and extending upward therefrom through holes'in the top plate 1 and a bar 19 secured to the top. plate 1 in front of the slotted frame made by the strips 1-. This bar is flush with the tops of the strips 4: and constitutes aseat 0111118 holder 16, as shown in Fig. 3.

The holder 17 carrying the bottom head sheet 15 is inserted at the rear of the nest between the .sarneand stop blocks 20 secured to the top plate 1 on a rear bar 21 at the rear ofthe nest and forming a seat for the holder 17. These h ad sheets 1 1, 15 have the same arrangement of tube holes as the fin. strips 11, 11 and, when. applied to the nest, align with the tube holes 12 in said strips and the vertical slots 13 in the plates 9. The holders 1 6, 17 have holes 16, .17 arranged as the holes inthe head sheets and strips 11', and register with such holes when applied to the nest.

After .the'fin strips 11 and head sheets I l and have been assembled in the, nest, the tubes 22 of the core are forced into the registering holes in the fin strips and head sheets to complete the core. (See Fig. After all the tubes have been pressed into place, the nest plates 9 are moved downward by power means acting on the base plate 10 until the upper co es of the plates 9 come below or flush with the tops of the strips (dotted lines Fig. 5), thus stripping the assembled core from the nest. At the san'ie time the pins 18 are drawn down from in front of the holder '16 so that by grasping the holders through their hand holes 16, ii", the assembled core may be lifted from the mar-lune and the holders 16, 17 slid oil the tube ends which project through the head sheets 1st, 15, as shown. in Fig. 4:. The core is now in readiness for soldering. Raising the plates 9 above the strips 4 by the power means acting on the plate 10 places the nest in condition for assembling another core. In the machine shown, the nest plate 10 slides up and down on guide pins or members 23, 23 depending from the top plate 1. The upper ends of the vertical slots 13 open through the upper edges of the plates 9, as shown in Figs. 2 and 5, so that the tubes 22 may pass out of the slots in the downward movement of the nest.

In the machine shown, the power means is in the form of an air cylinder 24 beneath the base plate 10 and having a piston 25 connected by a piston rod 26 with the under side of the plate 10. A valve 27 controls the operation of the piston for raising and lowering the nest. Said valve has an operating handle 28 within convenient reach of the operator. The cylinder 24 is hung under the machine by brackets 29, 29, as shown.

To hold the nest .9 from moving downward while assembling the core, we provide a lock comprising a bolt 30 extending through the front flange of the top plate 1 and engageable with a fixed part or lug 31 on the nest plate 10, as shown in Fig. 3. By a pin and slot connection between the bolt and the top plate 1, the bolt can not be withdrawn from the machine. J ust before dropping the nest for stripping the core therefrom, the bolt 30 is drawn outward to release the lug. The nest plates 9 rest edgewise at their lower ends on the plat-e 10 and have spacing strips 32, 32 between them, as shown in Fig. 3. The plates and strips are held in tight contact by bolts 33 passing through them and front and rear bars 34, 34, as shown. Screws 35 fasten these bars to the plate 10 and thus secure the nest thereto.

The machine of our invention is simple in construction and operation, and provides means whereby the assembled core and nest may be readily and quickly stripped one from the other by power, thus keeping the core in shape for soldering and not bending ing two sets of parts, one set consisting of slotted uprigut platesto accommodate the in strips and tubes, respectively, and the other set consisting of horizontally disposed strips between said plates to support the fin strips while assembling the core, and power operated means for moving one set of parts with respect to the other set for releasing the assembled core from the nest.

2. In a machine of the character described, the combination with a plurality of spaced strips to support fin strips of a tubular radil ator core while assembling the same, of nest plates slidable between said strips and having slots to receive the tubes of the core, and means for moving the plates with respect to the strips for stripping the nest plates from th assembled core.

8. In a machine of the character described, the combination with nest plates to receive between them the fin strips of" a tubular radiator core while assembling the same and havin slots to receive the tubes of the core, of top and bot-tom head sheet holders on opposite sides of the group of plates, slidable pins in front of one holder, and means for moving the plates and pins from the assembled core for releasing the same from the nest.

In a machine of the character described, the combination with nest plates for receiving between them the fin strips of a tubular radiator core while assembling the same and having slots to receive the tubes of the core, of power operated means for moving the plates from the assembled core, and means for locking the nest plates against movement while assembling the core.

5. In a machine of the character described, the combination with a movable base plate, of nest plates carried thereby and spaced apart to receive between them the fin strips of a tubular radiator core while assembling the same and having slots to receive the tubes of the core, power actuated means acting on said base plate for moving the nest plates from the assembled core, and a locking belt for holding said base plate against movement while assembling the core.

6. In a machine of the character described, the combination with a top plate having an opening therein, of spaced strips secured to said top plate and extending across said opening, nest plates slidable between the strips from the under side of said opening, and means for moving the nest plates vertically with respect to said strips.

7. In a machine of the character described, the combination with a top plate having an opening therein, of spaced strips extending across said opening and secured to said plate, nest plates slidable between the strips, a movable base plate beneath the top plate and carrying said nestplates, and means acting on said base plate for moving the nest plates up and down With respect to said strips.

8. In a machine of the character described,

the combination With a top plate having an movable base plate beneath the top plate a and carrying said nest plates, and a fluid actuated piston in a cylinder beneath said base plate and connected therewith for moving the nest plates up and down With respect to said strips.

In testimony that We claim the foregoing as our invention, We afiix our signature this 12 day of February, 1925.

BERT I-I. HAWKINS. EDWARD R. HANSEN 

